wm8350 Wolfson Microelectronics plc, wm8350 Datasheet - Page 6

• Manufacturer Part Number: wm8350
• Description: Wolfson Audioplus? Stereo Codec With Power Management
• Manufacturer: Wolfson Microelectronics plc

WM8350
14
15
16
w
13.12
14.1
14.2
14.3
14.4
14.5
14.6
14.7
14.8
14.9
15.1
15.2
16.1
16.2
13.12.1
13.12.2
13.12.3
13.12.4
13.12.5
13.12.6
13.12.7
POWER MANAGEMENT SUBSYSTEM ................................................... 107
14.2.1
14.3.1
14.3.2
14.3.3
14.3.4
14.3.5
14.3.6
14.4.1
14.4.2
14.4.3
14.5.1
14.5.2
14.5.3
14.6.1
14.6.2
14.6.3
14.6.4
14.6.5
14.7.1
14.7.2
14.7.3
14.7.4
14.8.1
14.8.2
14.8.3
CURRENT LIMIT SWITCH........................................................................ 148
15.2.1
15.2.2
15.2.3
CURRENT SINKS (LED DRIVERS) .......................................................... 151
16.2.1
16.2.2
16.2.3
ADDITIONAL CODEC FUNCTIONS .............................................................. 100
GENERAL DESCRIPTION ............................................................................. 107
POWER MANAGEMENT OPERATING STATES .......................................... 107
POWER SEQUENCING AND CONTROL ...................................................... 109
DEVELOPMENT MODE................................................................................. 115
CUSTOM MODES .......................................................................................... 120
CONFIGURING THE DC-DC CONVERTERS................................................ 129
CONFIGURING THE LDO REGULATORS .................................................... 138
DC-DC CONVERTER OPERATION .............................................................. 144
LDO REGULATOR OPERATION................................................................... 147
GENERAL DESCRIPTION ............................................................................. 148
CONFIGURING THE CURRENT LIMIT SWITCH .......................................... 148
GENERAL DESCRIPTION ............................................................................. 151
CONSTANT-CURRENT SINKS ..................................................................... 151
HIBERNATE STATE SELECTION.....................................................................................108
STARTUP .......................................................................................................................... 109
POWER-UP SEQUENCING...............................................................................................110
SHUTDOWN ......................................................................................................................111
POWER CYCLING.............................................................................................................112
REGISTER RESET ............................................................................................................112
RESET SIGNALS...............................................................................................................113
CONTROL INTERFACE REDIRECTION...........................................................................115
STARTING UP IN DEVELOPMENT MODE.......................................................................116
CONFIGURING THE WM8350 IN DEVELOPMENT MODE .............................................. 118
CONFIGURATION MODE 01 ............................................................................................120
CONFIGURATION MODE 10 ............................................................................................123
CONFIGURATION MODE 11 ............................................................................................126
DC-DC CONVERTER ENABLE .........................................................................................129
CLOCKING......................................................................................................................... 130
DC-DC BUCK (STEP-DOWN) CONVERTER CONTROL.................................................. 130
DC-DC BOOST (STEP-UP) CONVERTER CONTROL ..................................................... 133
INTERRUPTS AND FAULT PROTECTION .......................................................................135
LDO REGULATOR ENABLE..............................................................................................138
LDO REGULATOR CONTROL ..........................................................................................139
INTERRUPTS AND FAULT PROTECTION .......................................................................142
ADDITIONAL CONTROL FOR LDO1 ................................................................................143
OVERVIEW ........................................................................................................................ 144
DC-DC STEP DOWN CONVERTERS ...............................................................................145
DC-DC STEP UP CONVERTERS......................................................................................146
CURRENT LIMIT SWITCH ENABLE .................................................................................148
CURRENT LIMIT SWITCH BULK DETECTION CONTROL .............................................. 149
INTERRUPTS AND FAULT PROTECTION .......................................................................149
ENABLING THE SINK CURRENT .....................................................................................151
PROGRAMMING THE SINK CURRENT ...........................................................................152
FLASH MODE ....................................................................................................................152
HEADPHONE JACK DETECT .......................................................................................100
MICROPHONE DETECTION .........................................................................................101
MID-RAIL REFERENCE (VMID) ....................................................................................102
ANTI-POP CONTROL....................................................................................................103
UNUSED ANALOGUE INPUTS/OUTPUTS ...................................................................104
ZERO CROSS TIMEOUT ..............................................................................................106
INTERRUPTS AND FAULT PROTECTION ...................................................................106
PD, June 2009, Rev 4.1
Production Data
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